Thread-guide for spinning-machines



(No Model.)

C. B. BURT 8a A. D. DAVOL.

THREAD GUIDE FOR SPINNING MACHINES.

No. 421,237. Patented Feb. 11, 1 890.

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UNITED STATES PATENT OFFICE.

CHARLES BRADFORD BURT AND ALBERT D. DAVOL, OF TAUNTON, MASSACHUSETTS.

THREAD-GUIDE FOR SPINNING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 421,237, dated February 11, 1890.

Application filed October's, 1888. Serial No. 287,042. (No model.)

To coZZ whom it may concern.-

Be it known that we, CHARLES BRADFORD BURT and ALBERT D. DAVOL, citizens of the United States, residing at Taunton, in the county of Bristol and State of Massachusetts, have invented a new and useful Improvement in Thread-Guides for Spinning- Ma chines, of which the following is a'spccifica tion.

Our invention relates to an improvement in thread-guides for ring-spinning machines; and it consists in the peculiar construction and combination of devices that will be more fully set forth hereinafter, and particularly pointed out in the claims.

The object of ourinvention is, first, to provide means whereby the clamping-plate may be longitudinally adjusted on the wire-board; secondly, to provide means whereby the said plate may be rigidly secured at any desired adjustment; thirdly, to provide means whereby the friction between the clamp-plate and the guide-arm may be increased to such an extent as to maintain the'guide-arm in position when the latter is raised to permit the dofling of the spindle; fourthly, to provide means whereby the guide maybe adjusted in the direction of its length in the guide-arm; and a final object of my invention is to effect an economy in the construction of the parts of the device.

In the accompanying drawings, Figure 1 is a perspective View of the thread-guide embodying our improvements, showing the same attached to the wire-board and with the guidearm in a vertical position. Fig. 2 is a vertical transverse sectional view of the same. Fig. 3 is a longitudinalsectional view of the same, taken on the line :0 as of Fig. 2. Fig. 4 is a perspective view of the inner sides of the guide-plate and guide-arm, showing the same detached from each other. Figs. 5 and 6 are detail views illustrating modified. forms of my invention.

A represents the wire-board,

D represents the clamp-pla te, which is provided on its upper edge with a central extension E. The latter has a semicircular longitudinal groove F 011 its inner side, and the upper edge of the said extension is extended rearward to form aflange G, which is adapted to bear upon the upper side of the wire-board. At the lower edge of the clamp-plate is formed a rearwardlyextending horizontal flange H, which bears against the under side of the front edge of the wire-board. On the inner side of the clamp-plate, in the central portion thereof, is formed a vertical rectangular recess 1.

' K represents the longitudinal slot, which is made in the center of the clamp-plate and 00111- municates with the said recess. At the upper corners of the clamp-plate are formed horizontal ontwardly-extending lugs L.

M represents the guide-arm, which. has its lower end forked, so as to provide a pair of cars N, the under sides of which are rounded.

The width of the space between said cars is very slightly greater than the width of the extension E, and the latter is therebyadapted to fit between the said ears, so that the groove F of said extension engages a pint-le-rod O, thatis secured in the ears N by casting the latter on the ends of the rod. By this ar rangement and construction of devices the clam rplate and the guide-arm are adapted to be hinged together. The projecting portion of the guide-arm is cylindrical in shape and is provided with a cylindrical. bore, in which is fitted the stem of a thread-guide P, which is of the usual construction. A clampingscrew R engages the threaded recess in a stud or offset S, that projects from the guidearm, and is adapted to impinge on the stem of the thread-guide, so as to secure thelatter in the guide-arm at any longitudinal adj ustment.

T represents a spring-plate, which is rectangular in shape, and is inserted in the recess I and caused to bear between the guide-plate and the wire-board. Said spring-plate is slightly concave-convex in form, and is of sufficient width to cause its upper edge to bear against the inner side of the pintle-rod. The said spring plate is further provided with a longitudinal slot U, which registers with the slot K of the clamp-plate, and a set-screw V passes through the said slots of the clampplate and spring-plate and enters the wireboard and serves to secure the clamp-plate firmly to the wire-board.

By reason of the slots in the clamp and I spring plates the same may be adjusted longitudinally on the wire-board, as will be readily understood. Then the guide-arm is turned downward to its normal horizontal position, it engages the upper sides of the lugs L, and when the said guide-arm is turned to a vertical position its ears bear against the rounded upper edge of the wire-board. By tightening the clamping-screw the clampingplate may be caused to bear upon the springplate with such force as to cause the latter to bear against the pintle-rod with any desired degree of compression, and thereby exert so much friction on the pintle-rod as to maintain the guide-arm M in its vertical position when the same is upturned to permit the dotting of the bobbin.

In Fig. 5 we illustrate a modified form of our invention, in which the rear side of the guidearm is cut away to expose the bore thereof, and an eyebolt a is employed to secure the thread-guide, the eye of the bolt engaging the stem of the thread-guide and the end of the bolt having a clamping-nut b I).

In Fig. (3 we illustrate another modified form of our invention, in which the guide-arm has a recess 0 on one side communicating with the bore, and in this recess is inserted a clampingnut (Z, that engages the stem of the threadguide. A bolt 6 extends through a transverse opening in the gu'ide-arm, and has its threaded extremity engaging the threaded opening in the nut, by which means the latter is clamped on the stem to secure the thread-guide at any desired adjustment.

Having thus described our invention, we claim- 1. The clamp-plate having a slot to receive a fastening-screw, and provided at its lower edge with a rearwardly-extending flange and at its upper edge with forwardlyextending lugs, and a central extension grooved in its rear side and having a rearwardly-extending flange, in combination with the hinged member M, having the longitudinally-adjustable thread-guide, and means for retaining the guide in position, substantially as set forth.

2. The combination of the c1ampp1ate having the recess on its inner side, the groove F, and the slot communicating with the recess, with the guide-arm having the pintle-rod bearing in the groove, and carrying the threadguide, the clamp-plate arranged'in the recess and bearing on the pintle-rod, and the clamping-serew to secure the clamp plate to the Wire-board, substantially as described.

3. The clamp-plate having the recess in its rear side, and provided with a longitudinal slot and a central upward extension grooved in its rear side and having a rearwardly-extending flange, in combination with the slotted spring-plate arranged in the recess, the

fastening-screw, and the hinged member 1W1,-

having the longitudinally-adjustable threadguide, and means for retaining the guide in position, substantially as set forth.

In testimony that we claim the foregoing as our own we have hereto affixed our signatures in presence of two witnesses.

CHARLES BRADFORD BURT. ALBERT D. DAVOL. Witnesses:

J. O. REYNOLDS, THOMAS O. FALVEY. 

